<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
	<style type="text/css">
		*{
			margin: 0;
			padding: 0;
		}
		.box{
			width: 310px;
			height: 190px;
			position: relative;

		}
		.box2{
		      position: absolute;
		      top: 0;
		      left: 0;

		}
		.box3{
			position: absolute;
			bottom: 0px;
			right: 0px;
		}
	</style>
</head>
<body>
	<div class="box">
		<img src="../../小黑子/adv.jpg">
		<img src="../../小黑子/top_tu.gif" class="box2">
		<img src="../../小黑子/br.gif" class="box3">
	</div>
</body>
</html>